void func1(long x, long y, long z) {
    x = 0;
}

void func2(long* x, long* y, long* z) {
    *x = 0;
}

long a = 1;
long b = 2;
long c = 3;

int main() {
    func1(a, b, c);
    func2(&a, &b, &c);
}
